I need to change "Preferred Network Type" in Phone Info in Testing apk on my LG G2 LS980, like in this screenshot from a Youtube video.
In the dialer, I type
Which opens the Testing apk as below, with following 4 options:
I can open Battery Information, Usage statistics and WiFi information as below:
But when I open the Phone Info menu, it says
This application does not work on this device
My phone is running on Android 5.0.2, Software Version LS980ZVG (flashed with Stock ROM) and rooted. It is unlocked to use in India.